EP0776248B1 - Raffinierelemente - Google Patents

Raffinierelemente Download PDF

Info

Publication number
EP0776248B1
EP0776248B1 EP95926555A EP95926555A EP0776248B1 EP 0776248 B1 EP0776248 B1 EP 0776248B1 EP 95926555 A EP95926555 A EP 95926555A EP 95926555 A EP95926555 A EP 95926555A EP 0776248 B1 EP0776248 B1 EP 0776248B1
Authority
EP
European Patent Office
Prior art keywords
refining
bars
elements
zones
refining elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95926555A
Other languages
English (en)
French (fr)
Other versions
EP0776248A1 (de
Inventor
Nils Virving
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valmet AB
Original Assignee
Sunds Defibrator Industries AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunds Defibrator Industries AB filed Critical Sunds Defibrator Industries AB
Publication of EP0776248A1 publication Critical patent/EP0776248A1/de
Application granted granted Critical
Publication of EP0776248B1 publication Critical patent/EP0776248B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • D21D1/306—Discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/11—Details
    • B02C7/12—Shape or construction of discs

Definitions

  • This invention relates to the disintegration and refining of lignocellulosic material, such as mechanical pulp (TMP, CTMP), reject pulp, recycled fiber pulp a.o. in a disc refiner.
  • lignocellulosic material such as mechanical pulp (TMP, CTMP), reject pulp, recycled fiber pulp a.o. in a disc refiner.
  • the invention more precisely, refers to refining elements for use in a refiner of said type.
  • a disc refiner comprises two opposed refining discs rotating relative to each other, one or both of which are rotary.
  • a plurality of refining elements are arranged on the refining discs in a pattern of bars and intermediate grooves.
  • the refining discs are positioned so that the refining elements form a refining gap, through which the fiber material is intended to pass outward from within whereby disintegration is carried out by the bars of the refining elements.
  • Said bars can be of various design and, thus, may be continuous or discontinuous and are of uniform or varying height. In certain cases serrated bars can be used.
  • the fiber material first is defibered in the refining gap between the refining surfaces, i.e. the fibers are freed, which takes place in the interior portion of the refining gap where the distance between the refining surfaces is the greatest.
  • the refining gap narrows thereafter outward so that the desired working of the fiber material is obtained. Large energy amounts are required to bring about this working.
  • the material concentration can be 3-50%, which implies that simultaneously large amounts of steam are generated by the water following along.
  • the refining surfaces are formed in different ways, depending on the desired degree of working and thereby on the desired pulp quality.
  • the pulp quality is also affected by other factors, for example size of the refining gap, liquid content in the fiber material, feed, temperature a.s.o.
  • the appearance of the refining surfaces is of great importance, especially with regard to the fiber length of the material worked.
  • a substantially radial orientation of the bars on the refining surfaces a large proportion of long and well fibrillated fibers in the pulp is obtained.
  • the fiber material orientates itself in the refining gap with the fiber direction substantially in parallel with the bar edges.
  • defibering and working take place in that the fiber material substantially rolls between the bars on opposed refining surfaces whereby the fibers are freed and fibrillated in their entire length.
  • This type of pulp receives high strength and thereby is particularly valuable in many connections, for example for newsprint.
  • the energy consumption at the manufacture of this type of pulp is relatively high.
  • the bar angle also is of importance for the feed of the material through the refining gap.
  • an outward pumping action is obtained, while angling in the opposite direction yields a braking effect.
  • the stay time of the material in the refining gap thus, is affected by the angle of the bars.
  • the present invention implies that the refining elements can be formed so that they yield an optimum pulp and at the same time minimize the energy consumption.
  • co-operating refining elements are formed with bars and grooves in a number of restricted zones located radially outside each other where each refining element comprises at least three zones.
  • the bars in an opposed inner zone on both refining elements are oblique in different directions in relation to the radius of the refining elements (deviation 10-30°), so that the bars on opposed refining elements cross each other.
  • the bars in an intermediate zone are substantially radial (deviation ⁇ 15°, preferably ⁇ 10°), and in an outer zone the bars form an angle with the radius in the interval 10-30° in the same direction.
  • the bars on opposed refining elements can here be substantially in parallel.
  • the bars can be divided into several radial zones, each comprising one or several groups of bars where the bars substantially are mutually in parallel within each group.
  • the bars within one zone can form substantially the same angle with the radius. It is also possible to arrange the bars so that their angle changes successively across the refining surface.
  • each zone comprises a portion of the radial extension of the refining surface, viz, an inner zone A, an intermediate zone B and an outer zone C
  • Each zone is provided with bars forming an angle with the radius of the refining element.
  • the bars are arranged in a pattern tightening radially outward from one zone to another.
  • the angle in the inner zone A shall be 10-30° in relation to the radius.
  • the bars shall be angled for outward feed. In this zone A, feed is desired to take place at the same time as a first defibering of the material is aimed at.
  • the refining elements are formed so that the distance between opposed refining elements in the refiner in this inner zone A is of such a size that neither cutting nor fibrillation takes place to a significant degree.
  • the angle in the intermediate zone B shall be ⁇ 15°, preferably 10°, in relation to the radius.
  • the bars thus, shall be substantially radial.
  • the distance between opposed refining elements in this zone is shorter, and a certain working of the fibers takes place.
  • the bar angle implies a balancing between feeding and working.
  • the bar angle in relation to the radius can here vary between 10° and 30°, and the bars on opposed refining elements shall be directed in the same direction in relation to the radius.
  • the bars here can be substantially in parallel. This implies, that the fibrillation effect increases and the cutting effect decreases, and at the same time the stay time is extended due to the fact, that the bars on one refining element counteract the feed.
  • the bars in each zone A, B and, respectively, C can form one or several groups where the bars within each group are mutually in parallel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Paper (AREA)
  • Led Devices (AREA)
  • Crushing And Grinding (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Glass Compositions (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Disintegrating Or Milling (AREA)

Claims (4)

  1. Ein Paar von zusammenarbeitenden Mahlelementen, das zur Verwendung in einem Scheibenrefiner für das Zerkleinern und das Mahlen von Lignocellulose-Material in einem Mahlspalt zwischen zwei einander gegenüberliegenden Mahlscheiben bestimmt ist, die sich gegeneinander drehen, wobei die Mahlelemente direkt voreinander an einander gegenüberliegenden Mahlscheiben anzuordnen sind, wobei die beiden Mahlelemente mit Mahloberflächen ausgebildet sind, die Stege und Nuten umfassen, die in einer Anzahl von engeschränkten Zonen angeordnet sind, die radial außerhalb voneinander angeordnet sind, wobei jedes Mahlelement mindestens drei Zonen (A, B, C) umfaßt, dadurch gekennzeichnet, daß die Stege in einander gegenüberliegenden inneren Zonen (A) an den Mahlelementen unter einem Winkel von 10 - 30° in unterschiedlichen Richtungen in Bezug auf den Radius der Mahlelemente angeordnet sind, so daß die Stege an gegenüberliegenden Mahlelementen einander kreuzen, daß die Stege in einer mittleren Zone (B) an beiden Mahlelementen einen Winkel kleiner als 15° mit dem Radius bilden und daß die Stege in einer gegenüberliegenden äußeren Zone (C) an den Mahlelementen einen Winkel mit dem Radius in dem Bereich von 10 bis 30° in derselben Richtung bilden.
  2. Ein Paar von Mahlelementen gemäß Anspruch 1, dadurch gekennzeichnet, daß die Stege in einander gegenüberliegenden äußeren Zonen (C) im wesentlichen parallel verlaufen.
  3. Ein Paar von Mahlelementen nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Mahloberfläche in mindestens drei Zonen (A, B, C) aufgeteilt ist, die je eine oder mehrere Gruppen von Siegen umfassen, wobei die Stege in jeder Gruppe zueinander parallel verlaufen.
  4. Ein Paar von Mahlelementen gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Mahloberfläche in mindestens drei radiale Zonen (A, B, C) aufgeteilt ist, wobei die Stege in einer Zone im wesentlichen den gleichen Winkel mit dem Radius bilden.
EP95926555A 1994-08-18 1995-06-26 Raffinierelemente Expired - Lifetime EP0776248B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9402747A SE503168C2 (sv) 1994-08-18 1994-08-18 Ett par samverkande malelement
SE9402747 1994-08-18
PCT/SE1995/000780 WO1996005911A1 (en) 1994-08-18 1995-06-26 Refining elements

Publications (2)

Publication Number Publication Date
EP0776248A1 EP0776248A1 (de) 1997-06-04
EP0776248B1 true EP0776248B1 (de) 1999-12-08

Family

ID=20394943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95926555A Expired - Lifetime EP0776248B1 (de) 1994-08-18 1995-06-26 Raffinierelemente

Country Status (14)

Country Link
US (1) US5683048A (de)
EP (1) EP0776248B1 (de)
JP (1) JPH10510009A (de)
AT (1) ATE187358T1 (de)
AU (1) AU678908B2 (de)
BR (1) BR9508806A (de)
CA (1) CA2196298C (de)
DE (1) DE69513838T2 (de)
ES (1) ES2140693T3 (de)
FI (1) FI113630B (de)
NO (1) NO313408B1 (de)
NZ (1) NZ290214A (de)
SE (1) SE503168C2 (de)
WO (1) WO1996005911A1 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19816621A1 (de) * 1998-04-15 1999-11-04 Voith Sulzer Papiertech Patent Verfahren zur Mahlung von Laubholz-Zellstoff
US6325308B1 (en) 1999-09-28 2001-12-04 J & L Fiber Services, Inc. Refiner disc and method
US6422496B1 (en) 2000-06-14 2002-07-23 Voith Sulzer Paper Technology North America, Inc. Refiner for refining a fiber suspension
US6926216B2 (en) * 2001-10-11 2005-08-09 Hrw Limited Partnership Material crusher
US6910651B2 (en) * 2001-10-11 2005-06-28 Hrw Limited Partnership Material crusher
FI118971B (fi) 2002-07-02 2008-05-30 Metso Paper Inc Jauhin
KR20050113212A (ko) * 2003-03-04 2005-12-01 시그마 세이키 가부시키가이샤 분쇄기
FI119181B (fi) 2003-06-18 2008-08-29 Metso Paper Inc Jauhin
WO2005058502A1 (de) * 2003-12-19 2005-06-30 Herbold Meckesheim Gmbh Scheibenmühle
US7300540B2 (en) 2004-07-08 2007-11-27 Andritz Inc. Energy efficient TMP refining of destructured chips
CA2507321C (en) * 2004-07-08 2012-06-26 Andritz Inc. High intensity refiner plate with inner fiberizing zone
MXNL05000017A (es) * 2005-02-22 2006-03-23 Julio Antonio Trevino Morales Sector de refino y metodo de fabricacion.
US7472855B2 (en) * 2006-01-09 2009-01-06 Andritz Inc. Refiner stator plate having an outer row of teeth slanted to deflect pulp and method for pulp deflection during refining
US7300008B2 (en) * 2006-01-09 2007-11-27 Andritz Inc. Tooth refiner plates with varying feeding angles and refining method
FI122364B (fi) * 2006-01-30 2011-12-30 Metso Paper Inc Jauhin
WO2008098153A1 (en) * 2007-02-08 2008-08-14 Andritz Inc. Mechanical pulping refiner plate having curved refining bars with jagged leading sidewalls and method for designing plates
US8342437B2 (en) * 2009-04-23 2013-01-01 Andritz Inc. Deflaker plate and methods relating thereto
IT1401636B1 (it) * 2010-08-06 2013-07-26 Airaghi S R L Off Parte di ricambio per raffinatori a dischi per la produzione di carta
NZ591346A (en) * 2011-02-28 2011-10-28 Wpi Internat Ltd Improved method of producing pulp from pinus radiata
US9708765B2 (en) 2011-07-13 2017-07-18 Andritz Inc. Rotor refiner plate element for counter-rotating refiner having curved bars and serrated leading edges
US9670615B2 (en) 2011-08-19 2017-06-06 Andritz Inc. Conical rotor refiner plate element for counter-rotating refiner having curved bars and serrated leading sidewalls
US9181654B2 (en) 2012-05-30 2015-11-10 Andritz Inc. Refiner plate having a smooth, wave-like groove and related methods
AT14750U1 (de) * 2014-05-16 2016-05-15 Voith Patent Gmbh Vorrichtung zur Faserstoffbehandlung
FI127628B (en) 2014-06-26 2018-10-31 Valmet Technologies Inc Yksilevyjauhin
US11141735B2 (en) 2017-06-05 2021-10-12 Valmet Technologies Oy Refiner plate with wave-like groove profile
SE541835C2 (en) * 2018-02-21 2019-12-27 Valmet Oy Refiner segment
CN116268998A (zh) * 2021-12-20 2023-06-23 弗科玛股份公司 盘磨装置以及具有这种盘磨装置的研磨机

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149792A (en) * 1964-09-22 Refiner plates
US2654295A (en) * 1951-05-02 1953-10-06 Sutherland Refiner Corp Refiner apparatus
SE7502787L (sv) * 1975-03-12 1976-09-13 Sca Development Ab Malelement
SE437226B (sv) * 1983-06-21 1985-02-18 Sunds Defibrator Forfarande och anordning for framstellning av massa av malgods sasom fibermaterial
SE503187C2 (sv) * 1988-10-25 1996-04-15 Sunds Defibrator Ind Ab Sätt vid tillverkning av fibermassa samt malsegment för en raffinör för genomförande av sättet
US5181664A (en) * 1992-04-17 1993-01-26 Andritz Sprout-Bauer, Inc. Grinding plate with angled outer bars
SE470566B (sv) * 1993-01-14 1994-08-29 Sunds Defibrator Ind Ab Malelement avsett för en skivkvarn för defibrering och bearbetning av lignocellulosahaltigt fibermaterial
US5383617A (en) * 1993-10-21 1995-01-24 Deuchars; Ian Refiner plates with asymmetric inlet pattern
WO1995025199A1 (en) * 1994-03-15 1995-09-21 Beloit Technologies, Inc. Breaker bar section for a high consistency refiner
SE502907C2 (sv) * 1994-06-29 1996-02-19 Sunds Defibrator Ind Ab Malelement

Also Published As

Publication number Publication date
FI970658A (fi) 1997-02-17
FI113630B (fi) 2004-05-31
AU3088895A (en) 1996-03-14
US5683048A (en) 1997-11-04
CA2196298A1 (en) 1996-02-29
NO313408B1 (no) 2002-09-30
NO970729D0 (no) 1997-02-17
NO970729L (no) 1997-02-17
BR9508806A (pt) 1997-12-23
DE69513838T2 (de) 2000-04-20
CA2196298C (en) 2005-05-03
EP0776248A1 (de) 1997-06-04
DE69513838D1 (de) 2000-01-13
AU678908B2 (en) 1997-06-12
FI970658A0 (fi) 1997-02-17
SE9402747L (sv) 1996-02-19
ES2140693T3 (es) 2000-03-01
ATE187358T1 (de) 1999-12-15
SE503168C2 (sv) 1996-04-15
SE9402747D0 (sv) 1994-08-18
NZ290214A (en) 1997-12-19
WO1996005911A1 (en) 1996-02-29
JPH10510009A (ja) 1998-09-29

Similar Documents

Publication Publication Date Title
EP0776248B1 (de) Raffinierelemente
EP0611599B2 (de) Mahlsegment für Veredelungssegment
NO310548B1 (no) Raffineringselement
EP0442897B1 (de) Mahlsegmente
AU2002228533B2 (en) A pair of opposed co-operating refining elements
CA2050448C (en) Refiner plate groove configuration
CA2311532C (en) Refining elements
NZ331996A (en) Method for guiding the beating in a refiner and arrangement for performing the method
US7513451B2 (en) Refining element
AU2002355925B2 (en) Refining element
SU1390281A1 (ru) Гарнитура дисковой мельницы дл размола волокнистого материала
US5047118A (en) Method for decreasing energy consumption during refining of fiber material at a reduced grinding frequency while maintaining capacity
JPS5947758B2 (ja) 製紙原料の摩砕方法
US5152871A (en) Method for decreasing energy consumption during refining of fiber material while maintaining capacity

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19970120

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB IT SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19990521

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19991208

REF Corresponds to:

Ref document number: 187358

Country of ref document: AT

Date of ref document: 19991215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69513838

Country of ref document: DE

Date of ref document: 20000113

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2140693

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20040625

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050627

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20050627

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20090617

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090630

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090630

Year of fee payment: 15

Ref country code: DE

Payment date: 20090626

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090629

Year of fee payment: 15

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100626

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100630

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100626